# Bug 2064808: a border under a perspective transform must keep its authored
# thickness. The snap that fixes bugs 1258112 and 1950029 widens the layout
# width by 1/scale, which is only meaningful when one device scale describes
# the whole edge. Under perspective `w` varies across the border box, and the
# 2d scale factors of the transform (here |cos(45deg)| on the y axis) have no
# relation to the on-screen thickness: applying them swells the horizontal
# edges instead of leaving them alone, and the swelling grows without bound as
# the element tilts away. Expected output is the same outline a plain 1px rect
# per side produces under the identical transform.
---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 300, 300]
      perspective: 200
      items:
        - type: stacking-context
          bounds: [0, 0, 300, 300]
          transform: rotate-x(-45)
          items:
            - type: border
              bounds: [20, 20, 100, 100]
              width: [1, 1, 1, 1]
              border-type: normal
              style: solid
              color: [black, black, black, black]